(by hroychow from nmsu.edu)
Tue Sep 18 15:28:39 EST 2012
I had found one sure way to avoid degradation during shipment and/or storage is to dissolve it in DMFA. It can subsequently be re-precipitated from it. I agree with Dima that the radiation has to be rather high intensity to break the RNA during routine X-ray (then again, I am not sure what the intensity these days are. I opt out of the scanner at the airports). Thick lead containers may be used to eliminate that possibility (secondary emissions from thin lead foils may prove harmful too).
Hiranya S. Roychowdhury, Ph.D.
Health & Public Services
NMSU-Dona Ana Community College
575 527 7725 (office)
From: methods-bounces from oat.bio.indiana.edu [methods-bounces from oat.bio.indiana.edu] on behalf of DK [dk from no.email.thankstospam.net]
Sent: Sunday, September 16, 2012 8:58 PM
To: methods from magpie.bio.indiana.edu
Subject: Re: RNA shipment
In article <Pine.LNX.4.64.1209141041280.23885 from hermes-1.csi.cam.ac.uk>, Peter Ellis <pjie2 from cam.ac.uk> wrote:
>Has anyone had trouble sending or receiving RNA by air recently? We never
>used to have problems getting samples to or from collaborators: ship it on
>dry ice and as long as it stays frozen, it's fine.
>Recently we (and at least one other researcher in the Department) have
>been having problems with degradation en route. The samples are good
>condition when sent, stay frozen all the way, and yet are almost
>completely degraded on arrival. This has happened with flights to America
>Have they introduced some new scanning of shipments (X-ray or similar?)
>that degrades RNA?
That would be some really high intensity scan if it efficiently breaks RNA
when it is at -70C! That sort of power would be completely pointless, so
I'd discount this possibility. Sounds like human error somewhere:
The RNA is either degraded before shipment to begin with or whoever
receives it is not doing things right.
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